Depolarizer for galvanic batteries.



PATENTED APR. 14, 1908.

E. W. JUNGNER. DEPOLARIZBR FOR GALVANIO BATTERIES.

APPLIGATION FILED MAY 14, 1907 Inventor.

Witnsses.

' ERNST WALDEMAR JUNGNER, OF KNEIPPBADEN, NORRKGPING, SWEDEN.

'DEPOLARIZER FOR GALVANIC BATTERIES.

Specification of Letters Patent.

Patented. April 14, 1908.

Application filed May 14, 1907. Serial N 0. 373,575.

thereon, which form a part of this specifica-.

tion.

Thepresent invention relates to electric batteries, and has for itsobject the construction of an electrical battery by means of which theenergy delivered by the oxidation of the carbon is converted intoelectricity.

The invention is founded on the well-.

known fact that nitric oxid and oxygen in the presence of highlyconcentrated sulfuric acid unite with each other and with the acid toform nitrosyl-sulfuric acid, in accordance with the followingreactionconsequently, oxygen being present, the same combines with thenitric oxid, and the reformation of the nitrosyl-sulfuric acid takesplace according to the first equation.

The accompanying drawing illustrates such'an element in whichnitrosyl-sulfuric acid may be so used.

The vessel, B, is of earthenware, and on the bottom the f is placed alayer, K,'of electrically nductive amorphous carbon, for example, coke.Over the layer of coke is placed a perforated plate, A, of graphite,

having a conductive terminal inserted therein, preferably also ofgraphite.

In the vessel B is placed a smaller, porous vessel P, preferably made ofporous clay. This latter vessel is partly filled with pieces of porousgraphite G, saturated with a solution of nitrosyl-sulfuric aciddissolved in concentrated sulfuric acid, the pieces of graphite being ofsuch size as not to form capillary spaces between them.

The ieces of gra hite, G, are sup orted above t e bottom 0 the porousvesse on a finely divided perforated late E of ebonite or other suitablematerial; said plate being held above the bottom of the orous cup orvessel by means of su orts S, a so of an insulating material insolu b ein the electrolyte, as ebonite. Over the layer of pieces of graphite isplaced a erforated plate D of graphite, provided wit a conductiveterminal, likewise of graphite. Through the graphite plate D, the layerof graphite G and the ebon te plate E passes a tube R of glass orothersuitable material. Thevessels are filled with a solution ofnitrosyl-sulfuric acid inconcentrated sulfuric acid to'a lever, as N,somewhat above the bottom of the porous cup P and below the ebonite suporting plate E. Both vessels are provide with air-tight covers L and 1,through which pass the electrode terminals and tubes R, R and-r.

If air isintroduced through tube R to the space between the electrolytelevel N and the ebonite supporting plate E, it penetrates 'unithroughsome suitable resistance, an e ectric current will be obtained passingfrom D to A, es ecially if the apparatus be heated slightly. The cokewill thus be oxidized, the final reaction being as follows:-

The nitric oxid unites immediately with the oxygen of the air betweenthe graphite particles with the reformation of nitrosylsulfuric acid, asfollows- The result is a direct combination of carbon with oxygen whilethe other reacting substances remain unchanged.

- concentrated sulfuric acid.

containing nitrosyl-sulfuric acid and air sup- In place of coke othersuitable reducing i plied to the other electrode.

substances may be used. 1

I claim- 5. In a galvanic element having two car 1. A depolarizer forgalvanic elements I bon electrodes of difl'erent forms of carbon,

comprising nitrosyl-sulfurlc acid dissolved in l an electrolyte ofsulfuric acid covering one of the electrodes and containingnitrosyl-sul- 2. A depolarizer for galvanic elements I furio acid, andmeans to supply air to the comprising nitrosyl-sulfunc acid dissolved inother electrode.

concentrated sulfuric acid and oxygen. In testimony, that I claim theforegoing as 3. A depolarizer for alvanic elements my invention, havesigned my name in prescomprising nitfosyl-sulfuric acid dissolved inence of two subscribing Witnesses.

gg fi fii gfigfifi i g fii Supplied ERNST WALDEMAR JUNGNER.

4. A galvanic element com rising two Witnesses:

electrodes of carbon, an electrcilyte of sul- T. BOYE,

furic acid covering one of the electrodes "and FRITHIOF NYLIN.

